I have boost mobile they said my iPhone 12s compatible

I have boost mobile they said my iPhone 12s compatible how is locked in the boost Mobile for 12 months mind you I didn’t sign that form it was somebody else with me that saying that I just wanted to buy some scar the guy working there no nothing but anyways they said it was compatible my iPhone was mind you it was through Verizon is unlocked and if I switch like if I got those Sims card my phone number will be ported over where I could get any service which I’m trying to do I don’t like to set off well but it doesn’t card the newest one for iPhones and it did not work was again Texas was not getting calls only calls from boost mobile I could only make a call to boost

I need help because I took the Sim card back and got back on my Moto G 2021 from boost Can I use my LTE Sim card in my Verizon phone when I can I switch it will it work because my iPhones unlocked I just don’t like android phones and I was wondering if the LTE Sims card for my Moto G would work on my iPhone since their new iPhone service is not compatible like their 5G please help I’d appreciate it